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d3953223 SN |
1 | /* |
2 | * S5P/EXYNOS4 SoC series camera host interface media device driver | |
3 | * | |
7b43a6f3 SN |
4 | * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. |
5 | * Sylwester Nawrocki <s.nawrocki@samsung.com> | |
d3953223 SN |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation, either version 2 of the License, | |
10 | * or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/bug.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/list.h> | |
19 | #include <linux/module.h> | |
e2985a26 SN |
20 | #include <linux/of.h> |
21 | #include <linux/of_platform.h> | |
22 | #include <linux/of_device.h> | |
23 | #include <linux/of_i2c.h> | |
d3953223 SN |
24 | #include <linux/platform_device.h> |
25 | #include <linux/pm_runtime.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/slab.h> | |
131b6c61 | 28 | #include <media/v4l2-ctrls.h> |
e2985a26 | 29 | #include <media/v4l2-of.h> |
d3953223 | 30 | #include <media/media-device.h> |
b9ee31e6 | 31 | #include <media/s5p_fimc.h> |
d3953223 SN |
32 | |
33 | #include "fimc-core.h" | |
0f735f52 | 34 | #include "fimc-lite.h" |
d3953223 SN |
35 | #include "fimc-mdevice.h" |
36 | #include "mipi-csis.h" | |
37 | ||
38 | static int __fimc_md_set_camclk(struct fimc_md *fmd, | |
39 | struct fimc_sensor_info *s_info, | |
40 | bool on); | |
41 | /** | |
42 | * fimc_pipeline_prepare - update pipeline information with subdevice pointers | |
39bb6df6 | 43 | * @me: media entity terminating the pipeline |
d3953223 SN |
44 | * |
45 | * Caller holds the graph mutex. | |
46 | */ | |
b9ee31e6 SN |
47 | static void fimc_pipeline_prepare(struct fimc_pipeline *p, |
48 | struct media_entity *me) | |
d3953223 | 49 | { |
d3953223 | 50 | struct v4l2_subdev *sd; |
0f735f52 | 51 | int i; |
d3953223 | 52 | |
0f735f52 SN |
53 | for (i = 0; i < IDX_MAX; i++) |
54 | p->subdevs[i] = NULL; | |
d3953223 | 55 | |
0f735f52 | 56 | while (1) { |
39bb6df6 SN |
57 | struct media_pad *pad = NULL; |
58 | ||
59 | /* Find remote source pad */ | |
60 | for (i = 0; i < me->num_pads; i++) { | |
61 | struct media_pad *spad = &me->pads[i]; | |
62 | if (!(spad->flags & MEDIA_PAD_FL_SINK)) | |
63 | continue; | |
64 | pad = media_entity_remote_source(spad); | |
65 | if (pad) | |
66 | break; | |
67 | } | |
0f735f52 | 68 | |
0f735f52 SN |
69 | if (pad == NULL || |
70 | media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) | |
71 | break; | |
0f735f52 SN |
72 | sd = media_entity_to_v4l2_subdev(pad->entity); |
73 | ||
74 | switch (sd->grp_id) { | |
588c87be SN |
75 | case GRP_ID_FIMC_IS_SENSOR: |
76 | case GRP_ID_SENSOR: | |
0f735f52 SN |
77 | p->subdevs[IDX_SENSOR] = sd; |
78 | break; | |
588c87be | 79 | case GRP_ID_CSIS: |
0f735f52 SN |
80 | p->subdevs[IDX_CSIS] = sd; |
81 | break; | |
588c87be | 82 | case GRP_ID_FLITE: |
4af81310 SN |
83 | p->subdevs[IDX_FLITE] = sd; |
84 | break; | |
588c87be | 85 | case GRP_ID_FIMC: |
0f735f52 SN |
86 | /* No need to control FIMC subdev through subdev ops */ |
87 | break; | |
88 | default: | |
89 | pr_warn("%s: Unknown subdev grp_id: %#x\n", | |
90 | __func__, sd->grp_id); | |
91 | } | |
39bb6df6 SN |
92 | me = &sd->entity; |
93 | if (me->num_pads == 1) | |
94 | break; | |
d3953223 SN |
95 | } |
96 | } | |
97 | ||
98 | /** | |
99 | * __subdev_set_power - change power state of a single subdev | |
100 | * @sd: subdevice to change power state for | |
101 | * @on: 1 to enable power or 0 to disable | |
102 | * | |
103 | * Return result of s_power subdev operation or -ENXIO if sd argument | |
104 | * is NULL. Return 0 if the subdevice does not implement s_power. | |
105 | */ | |
106 | static int __subdev_set_power(struct v4l2_subdev *sd, int on) | |
107 | { | |
108 | int *use_count; | |
109 | int ret; | |
110 | ||
111 | if (sd == NULL) | |
112 | return -ENXIO; | |
113 | ||
114 | use_count = &sd->entity.use_count; | |
115 | if (on && (*use_count)++ > 0) | |
116 | return 0; | |
117 | else if (!on && (*use_count == 0 || --(*use_count) > 0)) | |
118 | return 0; | |
119 | ret = v4l2_subdev_call(sd, core, s_power, on); | |
120 | ||
121 | return ret != -ENOIOCTLCMD ? ret : 0; | |
122 | } | |
123 | ||
124 | /** | |
125 | * fimc_pipeline_s_power - change power state of all pipeline subdevs | |
126 | * @fimc: fimc device terminating the pipeline | |
0f735f52 | 127 | * @state: true to power on, false to power off |
d3953223 | 128 | * |
0f735f52 | 129 | * Needs to be called with the graph mutex held. |
d3953223 | 130 | */ |
f8bca4f5 | 131 | static int fimc_pipeline_s_power(struct fimc_pipeline *p, bool on) |
d3953223 | 132 | { |
f8bca4f5 SN |
133 | static const u8 seq[2][IDX_MAX - 1] = { |
134 | { IDX_IS_ISP, IDX_SENSOR, IDX_CSIS, IDX_FLITE }, | |
135 | { IDX_CSIS, IDX_FLITE, IDX_SENSOR, IDX_IS_ISP }, | |
136 | }; | |
137 | int i, ret = 0; | |
d3953223 | 138 | |
0f735f52 | 139 | if (p->subdevs[IDX_SENSOR] == NULL) |
d3953223 SN |
140 | return -ENXIO; |
141 | ||
f8bca4f5 SN |
142 | for (i = 0; i < IDX_MAX - 1; i++) { |
143 | unsigned int idx = seq[on][i]; | |
144 | ||
145 | ret = __subdev_set_power(p->subdevs[idx], on); | |
146 | ||
0f735f52 | 147 | |
0f735f52 | 148 | if (ret < 0 && ret != -ENXIO) |
f8bca4f5 | 149 | goto error; |
d3953223 | 150 | } |
0f735f52 | 151 | return 0; |
f8bca4f5 SN |
152 | error: |
153 | for (; i >= 0; i--) { | |
154 | unsigned int idx = seq[on][i]; | |
155 | __subdev_set_power(p->subdevs[idx], !on); | |
156 | } | |
157 | return ret; | |
d3953223 SN |
158 | } |
159 | ||
160 | /** | |
b9ee31e6 SN |
161 | * __fimc_pipeline_open - update the pipeline information, enable power |
162 | * of all pipeline subdevs and the sensor clock | |
d3953223 | 163 | * @me: media entity to start graph walk with |
056f4f30 | 164 | * @prepare: true to walk the current pipeline and acquire all subdevs |
d3953223 | 165 | * |
740ad921 | 166 | * Called with the graph mutex held. |
d3953223 | 167 | */ |
b9ee31e6 | 168 | static int __fimc_pipeline_open(struct fimc_pipeline *p, |
056f4f30 | 169 | struct media_entity *me, bool prepare) |
d3953223 | 170 | { |
056f4f30 SN |
171 | struct fimc_md *fmd = entity_to_fimc_mdev(me); |
172 | struct v4l2_subdev *sd; | |
d3953223 SN |
173 | int ret; |
174 | ||
056f4f30 SN |
175 | if (WARN_ON(p == NULL || me == NULL)) |
176 | return -EINVAL; | |
177 | ||
178 | if (prepare) | |
0f735f52 SN |
179 | fimc_pipeline_prepare(p, me); |
180 | ||
056f4f30 SN |
181 | sd = p->subdevs[IDX_SENSOR]; |
182 | if (sd == NULL) | |
d3953223 | 183 | return -EINVAL; |
0f735f52 | 184 | |
056f4f30 SN |
185 | /* Disable PXLASYNC clock if this pipeline includes FIMC-IS */ |
186 | if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) { | |
187 | ret = clk_prepare_enable(fmd->wbclk[CLK_IDX_WB_B]); | |
188 | if (ret < 0) | |
189 | return ret; | |
190 | } | |
191 | ret = fimc_md_set_camclk(sd, true); | |
192 | if (ret < 0) | |
193 | goto err_wbclk; | |
194 | ||
195 | ret = fimc_pipeline_s_power(p, 1); | |
196 | if (!ret) | |
197 | return 0; | |
0f735f52 | 198 | |
056f4f30 SN |
199 | fimc_md_set_camclk(sd, false); |
200 | ||
201 | err_wbclk: | |
202 | if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) | |
203 | clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]); | |
204 | ||
205 | return ret; | |
d3953223 SN |
206 | } |
207 | ||
d3953223 | 208 | /** |
b9ee31e6 | 209 | * __fimc_pipeline_close - disable the sensor clock and pipeline power |
d3953223 SN |
210 | * @fimc: fimc device terminating the pipeline |
211 | * | |
740ad921 | 212 | * Disable power of all subdevs and turn the external sensor clock off. |
d3953223 | 213 | */ |
b9ee31e6 | 214 | static int __fimc_pipeline_close(struct fimc_pipeline *p) |
d3953223 | 215 | { |
056f4f30 SN |
216 | struct v4l2_subdev *sd = p ? p->subdevs[IDX_SENSOR] : NULL; |
217 | struct fimc_md *fmd; | |
d3953223 SN |
218 | int ret = 0; |
219 | ||
056f4f30 | 220 | if (WARN_ON(sd == NULL)) |
740ad921 SN |
221 | return -EINVAL; |
222 | ||
0f735f52 SN |
223 | if (p->subdevs[IDX_SENSOR]) { |
224 | ret = fimc_pipeline_s_power(p, 0); | |
056f4f30 | 225 | fimc_md_set_camclk(sd, false); |
d3953223 | 226 | } |
056f4f30 SN |
227 | |
228 | fmd = entity_to_fimc_mdev(&sd->entity); | |
229 | ||
230 | /* Disable PXLASYNC clock if this pipeline includes FIMC-IS */ | |
231 | if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) | |
232 | clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]); | |
233 | ||
d3953223 SN |
234 | return ret == -ENXIO ? 0 : ret; |
235 | } | |
236 | ||
d3953223 | 237 | /** |
8d274e7c | 238 | * __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs |
0f735f52 | 239 | * @pipeline: video pipeline structure |
8d274e7c | 240 | * @on: passed as the s_stream() callback argument |
d3953223 | 241 | */ |
740ad921 | 242 | static int __fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) |
d3953223 | 243 | { |
8d274e7c SN |
244 | static const u8 seq[2][IDX_MAX] = { |
245 | { IDX_FIMC, IDX_SENSOR, IDX_IS_ISP, IDX_CSIS, IDX_FLITE }, | |
246 | { IDX_CSIS, IDX_FLITE, IDX_FIMC, IDX_SENSOR, IDX_IS_ISP }, | |
247 | }; | |
248 | int i, ret = 0; | |
d3953223 | 249 | |
0f735f52 | 250 | if (p->subdevs[IDX_SENSOR] == NULL) |
d3953223 SN |
251 | return -ENODEV; |
252 | ||
0f735f52 | 253 | for (i = 0; i < IDX_MAX; i++) { |
8d274e7c | 254 | unsigned int idx = seq[on][i]; |
0f735f52 SN |
255 | |
256 | ret = v4l2_subdev_call(p->subdevs[idx], video, s_stream, on); | |
257 | ||
258 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) | |
8d274e7c | 259 | goto error; |
0f735f52 | 260 | } |
0f735f52 | 261 | return 0; |
8d274e7c SN |
262 | error: |
263 | for (; i >= 0; i--) { | |
264 | unsigned int idx = seq[on][i]; | |
265 | v4l2_subdev_call(p->subdevs[idx], video, s_stream, !on); | |
266 | } | |
267 | return ret; | |
d3953223 | 268 | } |
b9ee31e6 SN |
269 | |
270 | /* Media pipeline operations for the FIMC/FIMC-LITE video device driver */ | |
271 | static const struct fimc_pipeline_ops fimc_pipeline_ops = { | |
740ad921 SN |
272 | .open = __fimc_pipeline_open, |
273 | .close = __fimc_pipeline_close, | |
274 | .set_stream = __fimc_pipeline_s_stream, | |
b9ee31e6 | 275 | }; |
d3953223 SN |
276 | |
277 | /* | |
278 | * Sensor subdevice helper functions | |
279 | */ | |
280 | static struct v4l2_subdev *fimc_md_register_sensor(struct fimc_md *fmd, | |
281 | struct fimc_sensor_info *s_info) | |
282 | { | |
283 | struct i2c_adapter *adapter; | |
284 | struct v4l2_subdev *sd = NULL; | |
285 | ||
286 | if (!s_info || !fmd) | |
287 | return NULL; | |
88fa8311 SN |
288 | /* |
289 | * If FIMC bus type is not Writeback FIFO assume it is same | |
290 | * as sensor_bus_type. | |
291 | */ | |
292 | s_info->pdata.fimc_bus_type = s_info->pdata.sensor_bus_type; | |
d3953223 | 293 | |
6612a082 | 294 | adapter = i2c_get_adapter(s_info->pdata.i2c_bus_num); |
ecd9acbf SN |
295 | if (!adapter) { |
296 | v4l2_warn(&fmd->v4l2_dev, | |
297 | "Failed to get I2C adapter %d, deferring probe\n", | |
6612a082 | 298 | s_info->pdata.i2c_bus_num); |
ecd9acbf SN |
299 | return ERR_PTR(-EPROBE_DEFER); |
300 | } | |
d3953223 | 301 | sd = v4l2_i2c_new_subdev_board(&fmd->v4l2_dev, adapter, |
6612a082 | 302 | s_info->pdata.board_info, NULL); |
d3953223 | 303 | if (IS_ERR_OR_NULL(sd)) { |
7acde02a | 304 | i2c_put_adapter(adapter); |
ecd9acbf SN |
305 | v4l2_warn(&fmd->v4l2_dev, |
306 | "Failed to acquire subdev %s, deferring probe\n", | |
6612a082 | 307 | s_info->pdata.board_info->type); |
ecd9acbf | 308 | return ERR_PTR(-EPROBE_DEFER); |
d3953223 SN |
309 | } |
310 | v4l2_set_subdev_hostdata(sd, s_info); | |
588c87be | 311 | sd->grp_id = GRP_ID_SENSOR; |
d3953223 SN |
312 | |
313 | v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice %s\n", | |
2b13f7d4 | 314 | sd->name); |
d3953223 SN |
315 | return sd; |
316 | } | |
317 | ||
318 | static void fimc_md_unregister_sensor(struct v4l2_subdev *sd) | |
319 | { | |
320 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
7acde02a | 321 | struct i2c_adapter *adapter; |
d3953223 SN |
322 | |
323 | if (!client) | |
324 | return; | |
325 | v4l2_device_unregister_subdev(sd); | |
2b13f7d4 SN |
326 | |
327 | if (!client->dev.of_node) { | |
328 | adapter = client->adapter; | |
329 | i2c_unregister_device(client); | |
330 | if (adapter) | |
331 | i2c_put_adapter(adapter); | |
332 | } | |
d3953223 SN |
333 | } |
334 | ||
e2985a26 | 335 | #ifdef CONFIG_OF |
2b13f7d4 SN |
336 | /* Register I2C client subdev associated with @node. */ |
337 | static int fimc_md_of_add_sensor(struct fimc_md *fmd, | |
338 | struct device_node *node, int index) | |
339 | { | |
340 | struct fimc_sensor_info *si; | |
341 | struct i2c_client *client; | |
342 | struct v4l2_subdev *sd; | |
343 | int ret; | |
344 | ||
345 | if (WARN_ON(index >= ARRAY_SIZE(fmd->sensor))) | |
346 | return -EINVAL; | |
347 | si = &fmd->sensor[index]; | |
348 | ||
349 | client = of_find_i2c_device_by_node(node); | |
350 | if (!client) | |
351 | return -EPROBE_DEFER; | |
352 | ||
353 | device_lock(&client->dev); | |
354 | ||
355 | if (!client->driver || | |
356 | !try_module_get(client->driver->driver.owner)) { | |
357 | ret = -EPROBE_DEFER; | |
358 | v4l2_info(&fmd->v4l2_dev, "No driver found for %s\n", | |
359 | node->full_name); | |
360 | goto dev_put; | |
361 | } | |
362 | ||
363 | /* Enable sensor's master clock */ | |
364 | ret = __fimc_md_set_camclk(fmd, si, true); | |
365 | if (ret < 0) | |
366 | goto mod_put; | |
367 | sd = i2c_get_clientdata(client); | |
368 | ||
369 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); | |
370 | __fimc_md_set_camclk(fmd, si, false); | |
371 | if (ret < 0) | |
372 | goto mod_put; | |
373 | ||
374 | v4l2_set_subdev_hostdata(sd, si); | |
375 | sd->grp_id = GRP_ID_SENSOR; | |
376 | si->subdev = sd; | |
377 | v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice: %s (%d)\n", | |
378 | sd->name, fmd->num_sensors); | |
379 | fmd->num_sensors++; | |
380 | ||
381 | mod_put: | |
382 | module_put(client->driver->driver.owner); | |
383 | dev_put: | |
384 | device_unlock(&client->dev); | |
385 | put_device(&client->dev); | |
386 | return ret; | |
387 | } | |
388 | ||
389 | /* Parse port node and register as a sub-device any sensor specified there. */ | |
390 | static int fimc_md_parse_port_node(struct fimc_md *fmd, | |
391 | struct device_node *port, | |
392 | unsigned int index) | |
393 | { | |
394 | struct device_node *rem, *ep, *np; | |
395 | struct fimc_source_info *pd; | |
396 | struct v4l2_of_endpoint endpoint; | |
397 | int ret; | |
398 | u32 val; | |
399 | ||
400 | pd = &fmd->sensor[index].pdata; | |
401 | ||
402 | /* Assume here a port node can have only one endpoint node. */ | |
403 | ep = of_get_next_child(port, NULL); | |
404 | if (!ep) | |
405 | return 0; | |
406 | ||
407 | v4l2_of_parse_endpoint(ep, &endpoint); | |
408 | if (WARN_ON(endpoint.port == 0) || index >= FIMC_MAX_SENSORS) | |
409 | return -EINVAL; | |
410 | ||
411 | pd->mux_id = (endpoint.port - 1) & 0x1; | |
412 | ||
413 | rem = v4l2_of_get_remote_port_parent(ep); | |
414 | of_node_put(ep); | |
415 | if (rem == NULL) { | |
416 | v4l2_info(&fmd->v4l2_dev, "Remote device at %s not found\n", | |
417 | ep->full_name); | |
418 | return 0; | |
419 | } | |
420 | if (!of_property_read_u32(rem, "samsung,camclk-out", &val)) | |
421 | pd->clk_id = val; | |
422 | ||
423 | if (!of_property_read_u32(rem, "clock-frequency", &val)) | |
424 | pd->clk_frequency = val; | |
425 | ||
426 | if (pd->clk_frequency == 0) { | |
427 | v4l2_err(&fmd->v4l2_dev, "Wrong clock frequency at node %s\n", | |
428 | rem->full_name); | |
429 | of_node_put(rem); | |
430 | return -EINVAL; | |
431 | } | |
432 | ||
433 | if (fimc_input_is_parallel(endpoint.port)) { | |
434 | if (endpoint.bus_type == V4L2_MBUS_PARALLEL) | |
435 | pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_601; | |
436 | else | |
437 | pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_656; | |
438 | pd->flags = endpoint.bus.parallel.flags; | |
439 | } else if (fimc_input_is_mipi_csi(endpoint.port)) { | |
440 | /* | |
441 | * MIPI CSI-2: only input mux selection and | |
442 | * the sensor's clock frequency is needed. | |
443 | */ | |
444 | pd->sensor_bus_type = FIMC_BUS_TYPE_MIPI_CSI2; | |
445 | } else { | |
446 | v4l2_err(&fmd->v4l2_dev, "Wrong port id (%u) at node %s\n", | |
447 | endpoint.port, rem->full_name); | |
448 | } | |
449 | /* | |
450 | * For FIMC-IS handled sensors, that are placed under i2c-isp device | |
451 | * node, FIMC is connected to the FIMC-IS through its ISP Writeback | |
452 | * input. Sensors are attached to the FIMC-LITE hostdata interface | |
453 | * directly or through MIPI-CSIS, depending on the external media bus | |
454 | * used. This needs to be handled in a more reliable way, not by just | |
455 | * checking parent's node name. | |
456 | */ | |
457 | np = of_get_parent(rem); | |
458 | ||
459 | if (np && !of_node_cmp(np->name, "i2c-isp")) | |
460 | pd->fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK; | |
461 | else | |
462 | pd->fimc_bus_type = pd->sensor_bus_type; | |
463 | ||
464 | ret = fimc_md_of_add_sensor(fmd, rem, index); | |
465 | of_node_put(rem); | |
466 | ||
467 | return ret; | |
468 | } | |
469 | ||
470 | /* Register all SoC external sub-devices */ | |
471 | static int fimc_md_of_sensors_register(struct fimc_md *fmd, | |
472 | struct device_node *np) | |
473 | { | |
474 | struct device_node *parent = fmd->pdev->dev.of_node; | |
475 | struct device_node *node, *ports; | |
476 | int index = 0; | |
477 | int ret; | |
478 | ||
479 | /* Attach sensors linked to MIPI CSI-2 receivers */ | |
480 | for_each_available_child_of_node(parent, node) { | |
481 | struct device_node *port; | |
482 | ||
483 | if (of_node_cmp(node->name, "csis")) | |
484 | continue; | |
485 | /* The csis node can have only port subnode. */ | |
486 | port = of_get_next_child(node, NULL); | |
487 | if (!port) | |
488 | continue; | |
489 | ||
490 | ret = fimc_md_parse_port_node(fmd, port, index); | |
491 | if (ret < 0) | |
492 | return ret; | |
493 | index++; | |
494 | } | |
495 | ||
496 | /* Attach sensors listed in the parallel-ports node */ | |
497 | ports = of_get_child_by_name(parent, "parallel-ports"); | |
498 | if (!ports) | |
499 | return 0; | |
500 | ||
501 | for_each_child_of_node(ports, node) { | |
502 | ret = fimc_md_parse_port_node(fmd, node, index); | |
503 | if (ret < 0) | |
504 | break; | |
505 | index++; | |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
e2985a26 SN |
511 | static int __of_get_csis_id(struct device_node *np) |
512 | { | |
513 | u32 reg = 0; | |
514 | ||
515 | np = of_get_child_by_name(np, "port"); | |
516 | if (!np) | |
517 | return -EINVAL; | |
518 | of_property_read_u32(np, "reg", ®); | |
519 | return reg - FIMC_INPUT_MIPI_CSI2_0; | |
520 | } | |
521 | #else | |
2b13f7d4 | 522 | #define fimc_md_of_sensors_register(fmd, np) (-ENOSYS) |
e2985a26 SN |
523 | #define __of_get_csis_id(np) (-ENOSYS) |
524 | #endif | |
525 | ||
d3953223 SN |
526 | static int fimc_md_register_sensor_entities(struct fimc_md *fmd) |
527 | { | |
528 | struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; | |
2b13f7d4 | 529 | struct device_node *of_node = fmd->pdev->dev.of_node; |
2b13f7d4 SN |
530 | int num_clients = 0; |
531 | int ret, i; | |
d3953223 SN |
532 | |
533 | /* | |
534 | * Runtime resume one of the FIMC entities to make sure | |
535 | * the sclk_cam clocks are not globally disabled. | |
536 | */ | |
3e20c345 | 537 | if (!fmd->pmf) |
d3953223 | 538 | return -ENXIO; |
2b13f7d4 | 539 | |
3e20c345 | 540 | ret = pm_runtime_get_sync(fmd->pmf); |
d3953223 SN |
541 | if (ret < 0) |
542 | return ret; | |
543 | ||
2b13f7d4 SN |
544 | if (of_node) { |
545 | fmd->num_sensors = 0; | |
546 | ret = fimc_md_of_sensors_register(fmd, of_node); | |
547 | } else if (pdata) { | |
548 | WARN_ON(pdata->num_clients > ARRAY_SIZE(fmd->sensor)); | |
549 | num_clients = min_t(u32, pdata->num_clients, | |
550 | ARRAY_SIZE(fmd->sensor)); | |
551 | fmd->num_sensors = num_clients; | |
d3953223 | 552 | |
2b13f7d4 SN |
553 | for (i = 0; i < num_clients; i++) { |
554 | struct v4l2_subdev *sd; | |
ecd9acbf | 555 | |
2b13f7d4 SN |
556 | fmd->sensor[i].pdata = pdata->source_info[i]; |
557 | ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], true); | |
558 | if (ret) | |
559 | break; | |
560 | sd = fimc_md_register_sensor(fmd, &fmd->sensor[i]); | |
561 | ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], false); | |
562 | ||
563 | if (IS_ERR(sd)) { | |
564 | fmd->sensor[i].subdev = NULL; | |
565 | ret = PTR_ERR(sd); | |
566 | break; | |
567 | } | |
ecd9acbf | 568 | fmd->sensor[i].subdev = sd; |
2b13f7d4 SN |
569 | if (ret) |
570 | break; | |
ecd9acbf | 571 | } |
d3953223 | 572 | } |
2b13f7d4 | 573 | |
3e20c345 | 574 | pm_runtime_put(fmd->pmf); |
d3953223 SN |
575 | return ret; |
576 | } | |
577 | ||
578 | /* | |
7b43a6f3 | 579 | * MIPI-CSIS, FIMC and FIMC-LITE platform devices registration. |
d3953223 | 580 | */ |
7b43a6f3 SN |
581 | |
582 | static int register_fimc_lite_entity(struct fimc_md *fmd, | |
583 | struct fimc_lite *fimc_lite) | |
d3953223 | 584 | { |
8163ec0b | 585 | struct v4l2_subdev *sd; |
afd7348c | 586 | int ret; |
4af81310 | 587 | |
7b43a6f3 SN |
588 | if (WARN_ON(fimc_lite->index >= FIMC_LITE_MAX_DEVS || |
589 | fmd->fimc_lite[fimc_lite->index])) | |
590 | return -EBUSY; | |
d3953223 | 591 | |
7b43a6f3 SN |
592 | sd = &fimc_lite->subdev; |
593 | sd->grp_id = GRP_ID_FLITE; | |
97d66c47 | 594 | v4l2_set_subdev_hostdata(sd, (void *)&fimc_pipeline_ops); |
693f5c40 SN |
595 | |
596 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); | |
7b43a6f3 SN |
597 | if (!ret) |
598 | fmd->fimc_lite[fimc_lite->index] = fimc_lite; | |
599 | else | |
600 | v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.LITE%d\n", | |
601 | fimc_lite->index); | |
602 | return ret; | |
d3953223 SN |
603 | } |
604 | ||
7b43a6f3 | 605 | static int register_fimc_entity(struct fimc_md *fmd, struct fimc_dev *fimc) |
4af81310 | 606 | { |
7b43a6f3 | 607 | struct v4l2_subdev *sd; |
4af81310 SN |
608 | int ret; |
609 | ||
7b43a6f3 SN |
610 | if (WARN_ON(fimc->id >= FIMC_MAX_DEVS || fmd->fimc[fimc->id])) |
611 | return -EBUSY; | |
4af81310 | 612 | |
7b43a6f3 SN |
613 | sd = &fimc->vid_cap.subdev; |
614 | sd->grp_id = GRP_ID_FIMC; | |
615 | v4l2_set_subdev_hostdata(sd, (void *)&fimc_pipeline_ops); | |
4af81310 | 616 | |
7b43a6f3 SN |
617 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); |
618 | if (!ret) { | |
3e20c345 SN |
619 | if (!fmd->pmf && fimc->pdev) |
620 | fmd->pmf = &fimc->pdev->dev; | |
7b43a6f3 SN |
621 | fmd->fimc[fimc->id] = fimc; |
622 | fimc->vid_cap.user_subdev_api = fmd->user_subdev_api; | |
623 | } else { | |
624 | v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n", | |
625 | fimc->id, ret); | |
4af81310 | 626 | } |
7b43a6f3 | 627 | return ret; |
4af81310 SN |
628 | } |
629 | ||
7b43a6f3 SN |
630 | static int register_csis_entity(struct fimc_md *fmd, |
631 | struct platform_device *pdev, | |
632 | struct v4l2_subdev *sd) | |
d3953223 | 633 | { |
7b43a6f3 | 634 | struct device_node *node = pdev->dev.of_node; |
d3953223 SN |
635 | int id, ret; |
636 | ||
e2985a26 | 637 | id = node ? __of_get_csis_id(node) : max(0, pdev->id); |
7b43a6f3 | 638 | |
e2985a26 SN |
639 | if (WARN_ON(id < 0 || id >= CSIS_MAX_ENTITIES)) |
640 | return -ENOENT; | |
7b43a6f3 | 641 | |
e2985a26 SN |
642 | if (WARN_ON(fmd->csis[id].sd)) |
643 | return -EBUSY; | |
d3953223 | 644 | |
588c87be | 645 | sd->grp_id = GRP_ID_CSIS; |
d3953223 | 646 | ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); |
afd7348c SN |
647 | if (!ret) |
648 | fmd->csis[id].sd = sd; | |
649 | else | |
d3953223 | 650 | v4l2_err(&fmd->v4l2_dev, |
7b43a6f3 | 651 | "Failed to register MIPI-CSIS.%d (%d)\n", id, ret); |
d3953223 SN |
652 | return ret; |
653 | } | |
654 | ||
7b43a6f3 SN |
655 | static int fimc_md_register_platform_entity(struct fimc_md *fmd, |
656 | struct platform_device *pdev, | |
657 | int plat_entity) | |
d3953223 | 658 | { |
7b43a6f3 SN |
659 | struct device *dev = &pdev->dev; |
660 | int ret = -EPROBE_DEFER; | |
661 | void *drvdata; | |
662 | ||
663 | /* Lock to ensure dev->driver won't change. */ | |
664 | device_lock(dev); | |
665 | ||
666 | if (!dev->driver || !try_module_get(dev->driver->owner)) | |
667 | goto dev_unlock; | |
668 | ||
669 | drvdata = dev_get_drvdata(dev); | |
670 | /* Some subdev didn't probe succesfully id drvdata is NULL */ | |
671 | if (drvdata) { | |
672 | switch (plat_entity) { | |
673 | case IDX_FIMC: | |
674 | ret = register_fimc_entity(fmd, drvdata); | |
675 | break; | |
676 | case IDX_FLITE: | |
677 | ret = register_fimc_lite_entity(fmd, drvdata); | |
ecd9acbf | 678 | break; |
7b43a6f3 SN |
679 | case IDX_CSIS: |
680 | ret = register_csis_entity(fmd, pdev, drvdata); | |
681 | break; | |
682 | default: | |
683 | ret = -ENODEV; | |
ecd9acbf SN |
684 | } |
685 | } | |
d3953223 | 686 | |
7b43a6f3 SN |
687 | module_put(dev->driver->owner); |
688 | dev_unlock: | |
689 | device_unlock(dev); | |
690 | if (ret == -EPROBE_DEFER) | |
691 | dev_info(&fmd->pdev->dev, "deferring %s device registration\n", | |
692 | dev_name(dev)); | |
693 | else if (ret < 0) | |
694 | dev_err(&fmd->pdev->dev, "%s device registration failed (%d)\n", | |
695 | dev_name(dev), ret); | |
696 | return ret; | |
697 | } | |
698 | ||
699 | static int fimc_md_pdev_match(struct device *dev, void *data) | |
700 | { | |
701 | struct platform_device *pdev = to_platform_device(dev); | |
702 | int plat_entity = -1; | |
703 | int ret; | |
704 | char *p; | |
705 | ||
706 | if (!get_device(dev)) | |
707 | return -ENODEV; | |
708 | ||
709 | if (!strcmp(pdev->name, CSIS_DRIVER_NAME)) { | |
710 | plat_entity = IDX_CSIS; | |
711 | } else if (!strcmp(pdev->name, FIMC_LITE_DRV_NAME)) { | |
712 | plat_entity = IDX_FLITE; | |
713 | } else { | |
714 | p = strstr(pdev->name, "fimc"); | |
715 | if (p && *(p + 4) == 0) | |
716 | plat_entity = IDX_FIMC; | |
ecd9acbf SN |
717 | } |
718 | ||
7b43a6f3 SN |
719 | if (plat_entity >= 0) |
720 | ret = fimc_md_register_platform_entity(data, pdev, | |
721 | plat_entity); | |
722 | put_device(dev); | |
723 | return 0; | |
d3953223 SN |
724 | } |
725 | ||
e2985a26 SN |
726 | /* Register FIMC, FIMC-LITE and CSIS media entities */ |
727 | #ifdef CONFIG_OF | |
728 | static int fimc_md_register_of_platform_entities(struct fimc_md *fmd, | |
729 | struct device_node *parent) | |
730 | { | |
731 | struct device_node *node; | |
732 | int ret = 0; | |
733 | ||
734 | for_each_available_child_of_node(parent, node) { | |
735 | struct platform_device *pdev; | |
736 | int plat_entity = -1; | |
737 | ||
738 | pdev = of_find_device_by_node(node); | |
739 | if (!pdev) | |
740 | continue; | |
741 | ||
742 | /* If driver of any entity isn't ready try all again later. */ | |
743 | if (!strcmp(node->name, CSIS_OF_NODE_NAME)) | |
744 | plat_entity = IDX_CSIS; | |
745 | else if (!strcmp(node->name, FIMC_LITE_OF_NODE_NAME)) | |
746 | plat_entity = IDX_FLITE; | |
747 | else if (!strcmp(node->name, FIMC_OF_NODE_NAME) && | |
748 | !of_property_read_bool(node, "samsung,lcd-wb")) | |
749 | plat_entity = IDX_FIMC; | |
750 | ||
751 | if (plat_entity >= 0) | |
752 | ret = fimc_md_register_platform_entity(fmd, pdev, | |
753 | plat_entity); | |
754 | put_device(&pdev->dev); | |
755 | if (ret < 0) | |
756 | break; | |
757 | } | |
758 | ||
759 | return ret; | |
760 | } | |
761 | #else | |
762 | #define fimc_md_register_of_platform_entities(fmd, node) (-ENOSYS) | |
763 | #endif | |
764 | ||
d3953223 SN |
765 | static void fimc_md_unregister_entities(struct fimc_md *fmd) |
766 | { | |
767 | int i; | |
768 | ||
769 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
770 | if (fmd->fimc[i] == NULL) | |
771 | continue; | |
693f5c40 | 772 | v4l2_device_unregister_subdev(&fmd->fimc[i]->vid_cap.subdev); |
b9ee31e6 | 773 | fmd->fimc[i]->pipeline_ops = NULL; |
d3953223 SN |
774 | fmd->fimc[i] = NULL; |
775 | } | |
4af81310 SN |
776 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { |
777 | if (fmd->fimc_lite[i] == NULL) | |
778 | continue; | |
779 | v4l2_device_unregister_subdev(&fmd->fimc_lite[i]->subdev); | |
248ac368 | 780 | fmd->fimc_lite[i]->pipeline_ops = NULL; |
4af81310 SN |
781 | fmd->fimc_lite[i] = NULL; |
782 | } | |
d3953223 SN |
783 | for (i = 0; i < CSIS_MAX_ENTITIES; i++) { |
784 | if (fmd->csis[i].sd == NULL) | |
785 | continue; | |
786 | v4l2_device_unregister_subdev(fmd->csis[i].sd); | |
ecd9acbf | 787 | module_put(fmd->csis[i].sd->owner); |
d3953223 SN |
788 | fmd->csis[i].sd = NULL; |
789 | } | |
790 | for (i = 0; i < fmd->num_sensors; i++) { | |
791 | if (fmd->sensor[i].subdev == NULL) | |
792 | continue; | |
793 | fimc_md_unregister_sensor(fmd->sensor[i].subdev); | |
794 | fmd->sensor[i].subdev = NULL; | |
795 | } | |
7b43a6f3 | 796 | v4l2_info(&fmd->v4l2_dev, "Unregistered all entities\n"); |
d3953223 SN |
797 | } |
798 | ||
d3953223 SN |
799 | /** |
800 | * __fimc_md_create_fimc_links - create links to all FIMC entities | |
801 | * @fmd: fimc media device | |
802 | * @source: the source entity to create links to all fimc entities from | |
803 | * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null | |
804 | * @pad: the source entity pad index | |
d0da3c35 | 805 | * @link_mask: bitmask of the fimc devices for which link should be enabled |
d3953223 | 806 | */ |
4af81310 SN |
807 | static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, |
808 | struct media_entity *source, | |
809 | struct v4l2_subdev *sensor, | |
d0da3c35 | 810 | int pad, int link_mask) |
d3953223 | 811 | { |
56bc911a | 812 | struct fimc_sensor_info *s_info = NULL; |
d3953223 | 813 | struct media_entity *sink; |
4af81310 | 814 | unsigned int flags = 0; |
237e0265 | 815 | int ret, i; |
d3953223 SN |
816 | |
817 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
818 | if (!fmd->fimc[i]) | |
4af81310 | 819 | continue; |
d3953223 SN |
820 | /* |
821 | * Some FIMC variants are not fitted with camera capture | |
822 | * interface. Skip creating a link from sensor for those. | |
823 | */ | |
4af81310 | 824 | if (!fmd->fimc[i]->variant->has_cam_if) |
d3953223 SN |
825 | continue; |
826 | ||
d0da3c35 | 827 | flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0; |
4af81310 | 828 | |
693f5c40 | 829 | sink = &fmd->fimc[i]->vid_cap.subdev.entity; |
237e0265 | 830 | ret = media_entity_create_link(source, pad, sink, |
88fa8311 | 831 | FIMC_SD_PAD_SINK_CAM, flags); |
d3953223 SN |
832 | if (ret) |
833 | return ret; | |
834 | ||
237e0265 SN |
835 | /* Notify FIMC capture subdev entity */ |
836 | ret = media_entity_call(sink, link_setup, &sink->pads[0], | |
837 | &source->pads[pad], flags); | |
838 | if (ret) | |
839 | break; | |
840 | ||
542fb082 | 841 | v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n", |
d3953223 SN |
842 | source->name, flags ? '=' : '-', sink->name); |
843 | ||
4af81310 | 844 | if (flags == 0 || sensor == NULL) |
d3953223 SN |
845 | continue; |
846 | s_info = v4l2_get_subdev_hostdata(sensor); | |
847 | if (!WARN_ON(s_info == NULL)) { | |
848 | unsigned long irq_flags; | |
849 | spin_lock_irqsave(&fmd->slock, irq_flags); | |
850 | s_info->host = fmd->fimc[i]; | |
851 | spin_unlock_irqrestore(&fmd->slock, irq_flags); | |
852 | } | |
853 | } | |
4af81310 SN |
854 | |
855 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { | |
856 | if (!fmd->fimc_lite[i]) | |
857 | continue; | |
858 | ||
d0da3c35 SN |
859 | if (link_mask & (1 << (i + FIMC_MAX_DEVS))) |
860 | flags = MEDIA_LNK_FL_ENABLED; | |
861 | else | |
862 | flags = 0; | |
4af81310 SN |
863 | |
864 | sink = &fmd->fimc_lite[i]->subdev.entity; | |
865 | ret = media_entity_create_link(source, pad, sink, | |
866 | FLITE_SD_PAD_SINK, flags); | |
867 | if (ret) | |
868 | return ret; | |
869 | ||
870 | /* Notify FIMC-LITE subdev entity */ | |
871 | ret = media_entity_call(sink, link_setup, &sink->pads[0], | |
872 | &source->pads[pad], flags); | |
873 | if (ret) | |
874 | break; | |
875 | ||
969e877c | 876 | v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n", |
4af81310 SN |
877 | source->name, flags ? '=' : '-', sink->name); |
878 | } | |
d3953223 SN |
879 | return 0; |
880 | } | |
881 | ||
4af81310 SN |
882 | /* Create links from FIMC-LITE source pads to other entities */ |
883 | static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) | |
884 | { | |
885 | struct media_entity *source, *sink; | |
886 | unsigned int flags = MEDIA_LNK_FL_ENABLED; | |
a26860bd | 887 | int i, ret = 0; |
4af81310 SN |
888 | |
889 | for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { | |
890 | struct fimc_lite *fimc = fmd->fimc_lite[i]; | |
891 | if (fimc == NULL) | |
892 | continue; | |
893 | source = &fimc->subdev.entity; | |
1bcd7041 | 894 | sink = &fimc->vfd.entity; |
4af81310 | 895 | /* FIMC-LITE's subdev and video node */ |
6319d6a0 | 896 | ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA, |
4af81310 SN |
897 | sink, 0, flags); |
898 | if (ret) | |
899 | break; | |
900 | /* TODO: create links to other entities */ | |
901 | } | |
902 | ||
903 | return ret; | |
904 | } | |
905 | ||
d3953223 SN |
906 | /** |
907 | * fimc_md_create_links - create default links between registered entities | |
908 | * | |
909 | * Parallel interface sensor entities are connected directly to FIMC capture | |
910 | * entities. The sensors using MIPI CSIS bus are connected through immutable | |
911 | * link with CSI receiver entity specified by mux_id. Any registered CSIS | |
912 | * entity has a link to each registered FIMC capture entity. Enabled links | |
913 | * are created by default between each subsequent registered sensor and | |
914 | * subsequent FIMC capture entity. The number of default active links is | |
915 | * determined by the number of available sensors or FIMC entities, | |
916 | * whichever is less. | |
917 | */ | |
918 | static int fimc_md_create_links(struct fimc_md *fmd) | |
919 | { | |
a8697ec8 | 920 | struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL }; |
d3953223 | 921 | struct v4l2_subdev *sensor, *csis; |
56bc911a | 922 | struct fimc_source_info *pdata; |
d3953223 | 923 | struct fimc_sensor_info *s_info; |
237e0265 | 924 | struct media_entity *source, *sink; |
d0da3c35 SN |
925 | int i, pad, fimc_id = 0, ret = 0; |
926 | u32 flags, link_mask = 0; | |
d3953223 SN |
927 | |
928 | for (i = 0; i < fmd->num_sensors; i++) { | |
929 | if (fmd->sensor[i].subdev == NULL) | |
930 | continue; | |
931 | ||
932 | sensor = fmd->sensor[i].subdev; | |
933 | s_info = v4l2_get_subdev_hostdata(sensor); | |
6612a082 | 934 | if (!s_info) |
d3953223 SN |
935 | continue; |
936 | ||
937 | source = NULL; | |
6612a082 | 938 | pdata = &s_info->pdata; |
d3953223 | 939 | |
56bc911a SN |
940 | switch (pdata->sensor_bus_type) { |
941 | case FIMC_BUS_TYPE_MIPI_CSI2: | |
d3953223 SN |
942 | if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES, |
943 | "Wrong CSI channel id: %d\n", pdata->mux_id)) | |
944 | return -EINVAL; | |
945 | ||
946 | csis = fmd->csis[pdata->mux_id].sd; | |
947 | if (WARN(csis == NULL, | |
948 | "MIPI-CSI interface specified " | |
949 | "but s5p-csis module is not loaded!\n")) | |
d12392ec | 950 | return -EINVAL; |
d3953223 | 951 | |
1c9f5bd7 AH |
952 | pad = sensor->entity.num_pads - 1; |
953 | ret = media_entity_create_link(&sensor->entity, pad, | |
d3953223 SN |
954 | &csis->entity, CSIS_PAD_SINK, |
955 | MEDIA_LNK_FL_IMMUTABLE | | |
956 | MEDIA_LNK_FL_ENABLED); | |
957 | if (ret) | |
958 | return ret; | |
959 | ||
969e877c | 960 | v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]\n", |
d3953223 SN |
961 | sensor->entity.name, csis->entity.name); |
962 | ||
4af81310 | 963 | source = NULL; |
5d33ee92 | 964 | csi_sensors[pdata->mux_id] = sensor; |
d3953223 SN |
965 | break; |
966 | ||
56bc911a | 967 | case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656: |
d3953223 SN |
968 | source = &sensor->entity; |
969 | pad = 0; | |
970 | break; | |
971 | ||
972 | default: | |
973 | v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n", | |
56bc911a | 974 | pdata->sensor_bus_type); |
d3953223 SN |
975 | return -EINVAL; |
976 | } | |
977 | if (source == NULL) | |
978 | continue; | |
979 | ||
d0da3c35 | 980 | link_mask = 1 << fimc_id++; |
4af81310 | 981 | ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, |
d0da3c35 | 982 | pad, link_mask); |
4af81310 SN |
983 | } |
984 | ||
a8697ec8 | 985 | for (i = 0; i < CSIS_MAX_ENTITIES; i++) { |
4af81310 SN |
986 | if (fmd->csis[i].sd == NULL) |
987 | continue; | |
988 | source = &fmd->csis[i].sd->entity; | |
989 | pad = CSIS_PAD_SOURCE; | |
5d33ee92 | 990 | sensor = csi_sensors[i]; |
4af81310 | 991 | |
d0da3c35 | 992 | link_mask = 1 << fimc_id++; |
5d33ee92 | 993 | ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, |
d0da3c35 | 994 | pad, link_mask); |
d3953223 | 995 | } |
4af81310 | 996 | |
237e0265 SN |
997 | /* Create immutable links between each FIMC's subdev and video node */ |
998 | flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED; | |
999 | for (i = 0; i < FIMC_MAX_DEVS; i++) { | |
1000 | if (!fmd->fimc[i]) | |
1001 | continue; | |
693f5c40 | 1002 | source = &fmd->fimc[i]->vid_cap.subdev.entity; |
31d34d9b | 1003 | sink = &fmd->fimc[i]->vid_cap.vfd.entity; |
237e0265 SN |
1004 | ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, |
1005 | sink, 0, flags); | |
1006 | if (ret) | |
1007 | break; | |
1008 | } | |
1009 | ||
4af81310 | 1010 | return __fimc_md_create_flite_source_links(fmd); |
d3953223 SN |
1011 | } |
1012 | ||
1013 | /* | |
056f4f30 | 1014 | * The peripheral sensor and CAM_BLK (PIXELASYNCMx) clocks management. |
d3953223 | 1015 | */ |
0e23cbbe SN |
1016 | static void fimc_md_put_clocks(struct fimc_md *fmd) |
1017 | { | |
1018 | int i = FIMC_MAX_CAMCLKS; | |
1019 | ||
1020 | while (--i >= 0) { | |
1021 | if (IS_ERR(fmd->camclk[i].clock)) | |
1022 | continue; | |
1023 | clk_unprepare(fmd->camclk[i].clock); | |
1024 | clk_put(fmd->camclk[i].clock); | |
1025 | fmd->camclk[i].clock = ERR_PTR(-EINVAL); | |
1026 | } | |
056f4f30 SN |
1027 | |
1028 | /* Writeback (PIXELASYNCMx) clocks */ | |
1029 | for (i = 0; i < FIMC_MAX_WBCLKS; i++) { | |
1030 | if (IS_ERR(fmd->wbclk[i])) | |
1031 | continue; | |
1032 | clk_put(fmd->wbclk[i]); | |
1033 | fmd->wbclk[i] = ERR_PTR(-EINVAL); | |
1034 | } | |
0e23cbbe SN |
1035 | } |
1036 | ||
d3953223 SN |
1037 | static int fimc_md_get_clocks(struct fimc_md *fmd) |
1038 | { | |
0e23cbbe | 1039 | struct device *dev = NULL; |
d3953223 SN |
1040 | char clk_name[32]; |
1041 | struct clk *clock; | |
0e23cbbe SN |
1042 | int ret, i; |
1043 | ||
1044 | for (i = 0; i < FIMC_MAX_CAMCLKS; i++) | |
1045 | fmd->camclk[i].clock = ERR_PTR(-EINVAL); | |
1046 | ||
1047 | if (fmd->pdev->dev.of_node) | |
1048 | dev = &fmd->pdev->dev; | |
d3953223 SN |
1049 | |
1050 | for (i = 0; i < FIMC_MAX_CAMCLKS; i++) { | |
1051 | snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i); | |
0e23cbbe SN |
1052 | clock = clk_get(dev, clk_name); |
1053 | ||
dc3ae328 | 1054 | if (IS_ERR(clock)) { |
0e23cbbe SN |
1055 | dev_err(&fmd->pdev->dev, "Failed to get clock: %s\n", |
1056 | clk_name); | |
1057 | ret = PTR_ERR(clock); | |
1058 | break; | |
1059 | } | |
1060 | ret = clk_prepare(clock); | |
1061 | if (ret < 0) { | |
1062 | clk_put(clock); | |
1063 | fmd->camclk[i].clock = ERR_PTR(-EINVAL); | |
1064 | break; | |
d3953223 SN |
1065 | } |
1066 | fmd->camclk[i].clock = clock; | |
1067 | } | |
0e23cbbe SN |
1068 | if (ret) |
1069 | fimc_md_put_clocks(fmd); | |
d3953223 | 1070 | |
056f4f30 SN |
1071 | if (!fmd->use_isp) |
1072 | return 0; | |
1073 | /* | |
1074 | * For now get only PIXELASYNCM1 clock (Writeback B/ISP), | |
1075 | * leave PIXELASYNCM0 out for the LCD Writeback driver. | |
1076 | */ | |
1077 | fmd->wbclk[CLK_IDX_WB_A] = ERR_PTR(-EINVAL); | |
1078 | ||
1079 | for (i = CLK_IDX_WB_B; i < FIMC_MAX_WBCLKS; i++) { | |
1080 | snprintf(clk_name, sizeof(clk_name), "pxl_async%u", i); | |
1081 | clock = clk_get(dev, clk_name); | |
1082 | if (IS_ERR(clock)) { | |
1083 | v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s\n", | |
1084 | clk_name); | |
1085 | ret = PTR_ERR(clock); | |
1086 | break; | |
1087 | } | |
1088 | fmd->wbclk[i] = clock; | |
1089 | } | |
1090 | if (ret) | |
1091 | fimc_md_put_clocks(fmd); | |
1092 | ||
0e23cbbe | 1093 | return ret; |
d3953223 SN |
1094 | } |
1095 | ||
1096 | static int __fimc_md_set_camclk(struct fimc_md *fmd, | |
e3fc82e8 SN |
1097 | struct fimc_sensor_info *s_info, |
1098 | bool on) | |
d3953223 | 1099 | { |
56bc911a | 1100 | struct fimc_source_info *pdata = &s_info->pdata; |
d3953223 SN |
1101 | struct fimc_camclk_info *camclk; |
1102 | int ret = 0; | |
1103 | ||
3e20c345 | 1104 | if (WARN_ON(pdata->clk_id >= FIMC_MAX_CAMCLKS) || !fmd || !fmd->pmf) |
d3953223 SN |
1105 | return -EINVAL; |
1106 | ||
d3953223 SN |
1107 | camclk = &fmd->camclk[pdata->clk_id]; |
1108 | ||
e3fc82e8 SN |
1109 | dbg("camclk %d, f: %lu, use_count: %d, on: %d", |
1110 | pdata->clk_id, pdata->clk_frequency, camclk->use_count, on); | |
d3953223 SN |
1111 | |
1112 | if (on) { | |
1113 | if (camclk->use_count > 0 && | |
1114 | camclk->frequency != pdata->clk_frequency) | |
1115 | return -EINVAL; | |
1116 | ||
1117 | if (camclk->use_count++ == 0) { | |
1118 | clk_set_rate(camclk->clock, pdata->clk_frequency); | |
1119 | camclk->frequency = pdata->clk_frequency; | |
3e20c345 SN |
1120 | ret = pm_runtime_get_sync(fmd->pmf); |
1121 | if (ret < 0) | |
1122 | return ret; | |
d3953223 | 1123 | ret = clk_enable(camclk->clock); |
e3fc82e8 SN |
1124 | dbg("Enabled camclk %d: f: %lu", pdata->clk_id, |
1125 | clk_get_rate(camclk->clock)); | |
d3953223 | 1126 | } |
d3953223 SN |
1127 | return ret; |
1128 | } | |
1129 | ||
1130 | if (WARN_ON(camclk->use_count == 0)) | |
1131 | return 0; | |
1132 | ||
1133 | if (--camclk->use_count == 0) { | |
1134 | clk_disable(camclk->clock); | |
3e20c345 | 1135 | pm_runtime_put(fmd->pmf); |
d3953223 SN |
1136 | dbg("Disabled camclk %d", pdata->clk_id); |
1137 | } | |
1138 | return ret; | |
1139 | } | |
1140 | ||
1141 | /** | |
1142 | * fimc_md_set_camclk - peripheral sensor clock setup | |
1143 | * @sd: sensor subdev to configure sclk_cam clock for | |
1144 | * @on: 1 to enable or 0 to disable the clock | |
1145 | * | |
1146 | * There are 2 separate clock outputs available in the SoC for external | |
1147 | * image processors. These clocks are shared between all registered FIMC | |
1148 | * devices to which sensors can be attached, either directly or through | |
1149 | * the MIPI CSI receiver. The clock is allowed here to be used by | |
1150 | * multiple sensors concurrently if they use same frequency. | |
d3953223 SN |
1151 | * This function should only be called when the graph mutex is held. |
1152 | */ | |
1153 | int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on) | |
1154 | { | |
1155 | struct fimc_sensor_info *s_info = v4l2_get_subdev_hostdata(sd); | |
1156 | struct fimc_md *fmd = entity_to_fimc_mdev(&sd->entity); | |
1157 | ||
1158 | return __fimc_md_set_camclk(fmd, s_info, on); | |
1159 | } | |
1160 | ||
1161 | static int fimc_md_link_notify(struct media_pad *source, | |
1162 | struct media_pad *sink, u32 flags) | |
1163 | { | |
4af81310 SN |
1164 | struct fimc_lite *fimc_lite = NULL; |
1165 | struct fimc_dev *fimc = NULL; | |
0f735f52 | 1166 | struct fimc_pipeline *pipeline; |
237e0265 | 1167 | struct v4l2_subdev *sd; |
740ad921 | 1168 | struct mutex *lock; |
d3953223 | 1169 | int ret = 0; |
740ad921 | 1170 | int ref_count; |
d3953223 | 1171 | |
237e0265 | 1172 | if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
d3953223 SN |
1173 | return 0; |
1174 | ||
237e0265 | 1175 | sd = media_entity_to_v4l2_subdev(sink->entity); |
d3953223 | 1176 | |
0f735f52 | 1177 | switch (sd->grp_id) { |
588c87be | 1178 | case GRP_ID_FLITE: |
4af81310 | 1179 | fimc_lite = v4l2_get_subdevdata(sd); |
740ad921 SN |
1180 | if (WARN_ON(fimc_lite == NULL)) |
1181 | return 0; | |
4af81310 | 1182 | pipeline = &fimc_lite->pipeline; |
740ad921 | 1183 | lock = &fimc_lite->lock; |
4af81310 | 1184 | break; |
588c87be | 1185 | case GRP_ID_FIMC: |
0f735f52 | 1186 | fimc = v4l2_get_subdevdata(sd); |
740ad921 SN |
1187 | if (WARN_ON(fimc == NULL)) |
1188 | return 0; | |
0f735f52 | 1189 | pipeline = &fimc->pipeline; |
740ad921 | 1190 | lock = &fimc->lock; |
0f735f52 SN |
1191 | break; |
1192 | default: | |
1193 | return 0; | |
1194 | } | |
131b6c61 | 1195 | |
0f735f52 | 1196 | if (!(flags & MEDIA_LNK_FL_ENABLED)) { |
740ad921 SN |
1197 | int i; |
1198 | mutex_lock(lock); | |
b9ee31e6 | 1199 | ret = __fimc_pipeline_close(pipeline); |
740ad921 SN |
1200 | for (i = 0; i < IDX_MAX; i++) |
1201 | pipeline->subdevs[i] = NULL; | |
1202 | if (fimc) | |
0f735f52 | 1203 | fimc_ctrls_delete(fimc->vid_cap.ctx); |
740ad921 | 1204 | mutex_unlock(lock); |
d3953223 SN |
1205 | return ret; |
1206 | } | |
1207 | /* | |
1208 | * Link activation. Enable power of pipeline elements only if the | |
1209 | * pipeline is already in use, i.e. its video node is opened. | |
131b6c61 | 1210 | * Recreate the controls destroyed during the link deactivation. |
d3953223 | 1211 | */ |
740ad921 SN |
1212 | mutex_lock(lock); |
1213 | ||
1214 | ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; | |
1215 | if (ref_count > 0) | |
1216 | ret = __fimc_pipeline_open(pipeline, source->entity, true); | |
1217 | if (!ret && fimc) | |
1218 | ret = fimc_capture_ctrls_create(fimc); | |
1219 | ||
1220 | mutex_unlock(lock); | |
d3953223 SN |
1221 | return ret ? -EPIPE : ret; |
1222 | } | |
1223 | ||
1224 | static ssize_t fimc_md_sysfs_show(struct device *dev, | |
1225 | struct device_attribute *attr, char *buf) | |
1226 | { | |
1227 | struct platform_device *pdev = to_platform_device(dev); | |
1228 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
1229 | ||
1230 | if (fmd->user_subdev_api) | |
1231 | return strlcpy(buf, "Sub-device API (sub-dev)\n", PAGE_SIZE); | |
1232 | ||
1233 | return strlcpy(buf, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE); | |
1234 | } | |
1235 | ||
1236 | static ssize_t fimc_md_sysfs_store(struct device *dev, | |
1237 | struct device_attribute *attr, | |
1238 | const char *buf, size_t count) | |
1239 | { | |
1240 | struct platform_device *pdev = to_platform_device(dev); | |
1241 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
1242 | bool subdev_api; | |
1243 | int i; | |
1244 | ||
1245 | if (!strcmp(buf, "vid-dev\n")) | |
1246 | subdev_api = false; | |
1247 | else if (!strcmp(buf, "sub-dev\n")) | |
1248 | subdev_api = true; | |
1249 | else | |
1250 | return count; | |
1251 | ||
1252 | fmd->user_subdev_api = subdev_api; | |
1253 | for (i = 0; i < FIMC_MAX_DEVS; i++) | |
1254 | if (fmd->fimc[i]) | |
1255 | fmd->fimc[i]->vid_cap.user_subdev_api = subdev_api; | |
1256 | return count; | |
1257 | } | |
1258 | /* | |
1259 | * This device attribute is to select video pipeline configuration method. | |
1260 | * There are following valid values: | |
1261 | * vid-dev - for V4L2 video node API only, subdevice will be configured | |
1262 | * by the host driver. | |
1263 | * sub-dev - for media controller API, subdevs must be configured in user | |
1264 | * space before starting streaming. | |
1265 | */ | |
1266 | static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO, | |
1267 | fimc_md_sysfs_show, fimc_md_sysfs_store); | |
1268 | ||
4163851f SN |
1269 | static int fimc_md_get_pinctrl(struct fimc_md *fmd) |
1270 | { | |
1271 | struct device *dev = &fmd->pdev->dev; | |
1272 | struct fimc_pinctrl *pctl = &fmd->pinctl; | |
1273 | ||
1274 | pctl->pinctrl = devm_pinctrl_get(dev); | |
1275 | if (IS_ERR(pctl->pinctrl)) | |
1276 | return PTR_ERR(pctl->pinctrl); | |
1277 | ||
1278 | pctl->state_default = pinctrl_lookup_state(pctl->pinctrl, | |
1279 | PINCTRL_STATE_DEFAULT); | |
1280 | if (IS_ERR(pctl->state_default)) | |
1281 | return PTR_ERR(pctl->state_default); | |
1282 | ||
1283 | pctl->state_idle = pinctrl_lookup_state(pctl->pinctrl, | |
1284 | PINCTRL_STATE_IDLE); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
ecd9acbf | 1288 | static int fimc_md_probe(struct platform_device *pdev) |
d3953223 | 1289 | { |
e2985a26 | 1290 | struct device *dev = &pdev->dev; |
d3953223 SN |
1291 | struct v4l2_device *v4l2_dev; |
1292 | struct fimc_md *fmd; | |
1293 | int ret; | |
1294 | ||
e2985a26 | 1295 | fmd = devm_kzalloc(dev, sizeof(*fmd), GFP_KERNEL); |
d3953223 SN |
1296 | if (!fmd) |
1297 | return -ENOMEM; | |
1298 | ||
1299 | spin_lock_init(&fmd->slock); | |
1300 | fmd->pdev = pdev; | |
1301 | ||
1302 | strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC", | |
1303 | sizeof(fmd->media_dev.model)); | |
1304 | fmd->media_dev.link_notify = fimc_md_link_notify; | |
e2985a26 | 1305 | fmd->media_dev.dev = dev; |
d3953223 SN |
1306 | |
1307 | v4l2_dev = &fmd->v4l2_dev; | |
1308 | v4l2_dev->mdev = &fmd->media_dev; | |
e1d72f4d | 1309 | v4l2_dev->notify = fimc_sensor_notify; |
e2985a26 | 1310 | strlcpy(v4l2_dev->name, "s5p-fimc-md", sizeof(v4l2_dev->name)); |
d3953223 | 1311 | |
e2985a26 | 1312 | ret = v4l2_device_register(dev, &fmd->v4l2_dev); |
d3953223 SN |
1313 | if (ret < 0) { |
1314 | v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); | |
6d91a51a | 1315 | return ret; |
d3953223 SN |
1316 | } |
1317 | ret = media_device_register(&fmd->media_dev); | |
1318 | if (ret < 0) { | |
1319 | v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret); | |
693f5c40 | 1320 | goto err_md; |
d3953223 SN |
1321 | } |
1322 | ret = fimc_md_get_clocks(fmd); | |
1323 | if (ret) | |
693f5c40 | 1324 | goto err_clk; |
d3953223 | 1325 | |
e2985a26 | 1326 | fmd->user_subdev_api = (dev->of_node != NULL); |
693f5c40 SN |
1327 | |
1328 | /* Protect the media graph while we're registering entities */ | |
1329 | mutex_lock(&fmd->media_dev.graph_mutex); | |
1330 | ||
4163851f SN |
1331 | ret = fimc_md_get_pinctrl(fmd); |
1332 | if (ret < 0) { | |
1333 | if (ret != EPROBE_DEFER) | |
1334 | dev_err(dev, "Failed to get pinctrl: %d\n", ret); | |
1335 | goto err_unlock; | |
1336 | } | |
1337 | ||
e2985a26 SN |
1338 | if (dev->of_node) |
1339 | ret = fimc_md_register_of_platform_entities(fmd, dev->of_node); | |
1340 | else | |
1341 | ret = bus_for_each_dev(&platform_bus_type, NULL, fmd, | |
1342 | fimc_md_pdev_match); | |
d3953223 | 1343 | if (ret) |
693f5c40 | 1344 | goto err_unlock; |
d3953223 | 1345 | |
2b13f7d4 | 1346 | if (dev->platform_data || dev->of_node) { |
5cbf6f16 SN |
1347 | ret = fimc_md_register_sensor_entities(fmd); |
1348 | if (ret) | |
693f5c40 | 1349 | goto err_unlock; |
5cbf6f16 | 1350 | } |
e2985a26 | 1351 | |
d3953223 SN |
1352 | ret = fimc_md_create_links(fmd); |
1353 | if (ret) | |
693f5c40 | 1354 | goto err_unlock; |
d3953223 SN |
1355 | ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); |
1356 | if (ret) | |
693f5c40 | 1357 | goto err_unlock; |
d3953223 SN |
1358 | |
1359 | ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode); | |
693f5c40 SN |
1360 | if (ret) |
1361 | goto err_unlock; | |
1362 | ||
1363 | platform_set_drvdata(pdev, fmd); | |
1364 | mutex_unlock(&fmd->media_dev.graph_mutex); | |
1365 | return 0; | |
1366 | ||
1367 | err_unlock: | |
1368 | mutex_unlock(&fmd->media_dev.graph_mutex); | |
1369 | err_clk: | |
d3953223 SN |
1370 | media_device_unregister(&fmd->media_dev); |
1371 | fimc_md_put_clocks(fmd); | |
1372 | fimc_md_unregister_entities(fmd); | |
693f5c40 | 1373 | err_md: |
d3953223 | 1374 | v4l2_device_unregister(&fmd->v4l2_dev); |
d3953223 SN |
1375 | return ret; |
1376 | } | |
1377 | ||
4c62e976 | 1378 | static int fimc_md_remove(struct platform_device *pdev) |
d3953223 SN |
1379 | { |
1380 | struct fimc_md *fmd = platform_get_drvdata(pdev); | |
1381 | ||
1382 | if (!fmd) | |
1383 | return 0; | |
1384 | device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode); | |
1385 | fimc_md_unregister_entities(fmd); | |
1386 | media_device_unregister(&fmd->media_dev); | |
1387 | fimc_md_put_clocks(fmd); | |
d3953223 SN |
1388 | return 0; |
1389 | } | |
1390 | ||
e2985a26 SN |
1391 | static struct platform_device_id fimc_driver_ids[] __always_unused = { |
1392 | { .name = "s5p-fimc-md" }, | |
1393 | { }, | |
1394 | }; | |
1395 | MODULE_DEVICE_TABLE(platform, fimc_driver_ids); | |
1396 | ||
1397 | static const struct of_device_id fimc_md_of_match[] = { | |
1398 | { .compatible = "samsung,fimc" }, | |
1399 | { }, | |
1400 | }; | |
1401 | MODULE_DEVICE_TABLE(of, fimc_md_of_match); | |
1402 | ||
d3953223 SN |
1403 | static struct platform_driver fimc_md_driver = { |
1404 | .probe = fimc_md_probe, | |
4c62e976 | 1405 | .remove = fimc_md_remove, |
d3953223 | 1406 | .driver = { |
e2985a26 SN |
1407 | .of_match_table = of_match_ptr(fimc_md_of_match), |
1408 | .name = "s5p-fimc-md", | |
1409 | .owner = THIS_MODULE, | |
d3953223 SN |
1410 | } |
1411 | }; | |
1412 | ||
7e566be2 | 1413 | static int __init fimc_md_init(void) |
d3953223 SN |
1414 | { |
1415 | int ret; | |
ecd9acbf | 1416 | |
d3953223 SN |
1417 | request_module("s5p-csis"); |
1418 | ret = fimc_register_driver(); | |
1419 | if (ret) | |
1420 | return ret; | |
ecd9acbf | 1421 | |
d3953223 SN |
1422 | return platform_driver_register(&fimc_md_driver); |
1423 | } | |
7e566be2 SK |
1424 | |
1425 | static void __exit fimc_md_exit(void) | |
d3953223 SN |
1426 | { |
1427 | platform_driver_unregister(&fimc_md_driver); | |
1428 | fimc_unregister_driver(); | |
1429 | } | |
1430 | ||
1431 | module_init(fimc_md_init); | |
1432 | module_exit(fimc_md_exit); | |
1433 | ||
1434 | MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>"); | |
1435 | MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver"); | |
1436 | MODULE_LICENSE("GPL"); | |
1437 | MODULE_VERSION("2.0.1"); |